Aye, but what happens if either diode fails and conducts both ways. Is your 
active coil then driven by two sets of points going to ground at the same 
time. If the points are slightly out in gap/alignment on lobes is dwell time 
extended or ignition timing altered.   Hmmmm.

I reckon it's easier and more reliable to do away with a coil tacho all 
together and use a tooth counter sender off the ring gear then tacho failure 
won't stop your ignition.


John Martindale
29 Jane Circuit
TOORMINA NSW 2452
AUSTRALIA

phone:  61 2 66584767 (H)
             61 2 66869075 (W)
mobile:  0403 049990
email:    johnja...@optusnet.com.au
web:     www.members.optusnet.com.au/johnjanet/Martindale.htm

----- Original Message ----- 
From: "Mark Jones" <flyk...@wi.rr.com>
To: "KRnet" <kr...@mylist.net>
Sent: Wednesday, October 11, 2006 9:05 PM
Subject: Re: KR> Tach hook up question.


> Thanks Colin. That explanation says it all and makes it very 
> clear..........


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